Jon Gravelli Jr. is an unseen character in Grand Theft Auto IV. He is the forty year-old son of Jon Gravelli, Don of the Gambetti Family. He was disowned by the Gambetti organization due his development of a cocaine addiction. According to the Liberty City PoliceDatabase, he is currently in police custody. Although he is heavily in debt and no longer considered part of the Gambetti Family, his father has insured that no one attempts to collect on his debts.

Jon has been arrested three times; once in 1995 for possession of a controlled substance (cocaine), again in 1998 for possession of another controlled substance (crack cocaine) and finally in 2004 for armed robbery.

LCPD Database information

Surname: Gravelli

First Name: Jon Jr.

Age: 40

Place of Birth: Broker, Liberty City

Affiliations: Gambetti Crime Syndicate

Criminal Record:

1995 - Possession Controlled Substance: Cocaine

1998 - Possession Controlled Substance: Crack Cocaine

2004 - Armed Robbery

Notes:

Son of Jon Gravelli

Believed to have been disowned after he developed a cocaine addiction.

Heavily in debt to loan sharks all over Liberty City but protected by his father's position.